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1 Dryland Inquiry purse / Section When most people think of drylands and deserts , they imagin hey imagine hot sandy landscapes . Most of the...

Need help with activity 14.1 dryland inquiry for A,B, C and D all parts please IMG_6323.jpegIMG_6322.jpeg

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14.1 Dryland Inquiry
purse / Section
When most people think of drylands and deserts , they imagin
hey imagine hot sandy landscapes . Most of the southwestern United States
them California and Arizona . However , most of the Sonoran
Desert is rocky
is desert , includi
ng the Sonoran Desert of southern California and Arizona
location where
landscapes . Sandy areas are present , but
limited , like the Algodones Dune Field in FIGURE 14 .1 . This is the
Star Wars producers filmed desert scenes of the film's planet Tatooine
1 . Notice the sand dunes of the Algodones Dune Field in FIGURE 19 .1 . Why do you think there are no plants growing on
the dunes
reach velocities up to 60 miles per hour . This can create hazardo
us conditions and
Winds in the Algodones Dune Field can
the need for maintainence on the canal and Interstate Route 8 . What would be the hazard , and what maintenance would
be needed periodically on the canal and Interstate Route 8 as a result of the hazard ?
3 . This region is managed by the U
the U .S . Bureau of Land Management as Imperial Sand Dunes Recreation Area . Portions of the
dunes are available for operating off - road vehicles
vehicles . What effi
at effect do you think the operation of off -road vehicles here would
have on plant growth and the hazards you described above ?
Death Valley , occurs in the Mojave Desert . Analyze the images of the Death Valley region in FIGURES 14 .2 and 14. 3
1 . Notice in FIGURE 14 .2 that steep mountain
mountainous slopes occur on both sides of Death Valley . Also notice that there is
almost no soil or vegetation on the slopes . Describe what you think conditions would be like in the river va
leys on these
mountain s
slopes when a heavy rain falls on them
2 . Notice the delta- like landforms that form at the mou
this of the rivers in FIGURES 14 .2 and 14 .3 , where the rivers enter t
valley . Explain how you think these landforms form
3 . Notice that there is no standing water in Death Valley , even though you can see that water sometimes flows into the valley
from the mountains . It is a closed basin ( meaning that water has no way to drain from it ) . It is also the hottest and driest
place in North America . When there is water on the floor of the vally , it is alkaline to salty and not parable ( drinkable
How do you think the water gets so alkaline and salty ?
4 . Suppose you could walk down to the white patches on the floor of Death Valley in FIGURES 14 .2 and 14 .3 and examine
them . Predict what materials and conditions you would find there
Residents of Furnace Creek have grassy lawns , trees , and potable water to drink . Why do you think their water is potable ?

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Open Google Earth I'M Type coordinates " 33 49 15 N . 1 1
6 25 W " into the search box and press enter to go to the location
You should arrive at Rancho Mirage , California , a resort community loca
ity located in a desert region .
Notice that Rancho Mirage has a triangular shape Based on your work i
Ik in part B how was the landform beneath Rancho
Mirage formed ?
2 . Using your mouse , hover over the
icons at the top of the Google Earth , screen to find and select the
" Show historical
ty " feature . Use the slider to go back in time and view ho
and view how Rancho Mirage has changed . Desc
Describe how it has
changed since 1996
In July of 1979 , a violent storm developed here and nearly six inches of rain fell on the San Jacinto Mountains , uphill from
Rancho Mirage . At that time , flood control at
control at Rancho Mirage included a system of earthen channels and concrete
images of
that were overwhelmed by a flash flood . Many homes were damaged and two lives were lost in the event . Analyze
of Rancho Mirage in Google Earth M and describe any evidence of flood control measures
4 . Would you feel safe living at Rancho Mirage ? Explain
D . REFLECT & DISCUSS The United Nations Convention to Combat Desertification ( UNCCD ) points out that many
people live in drylands , and that more than half of the world's productive land is dryland . The challenge is to manage the land
so that it does not degrade to useless desert that supports no agriculture , and to live safely Based on your work above , make a
list of challenges that people face when they live in drylands , and some ways that the lan
and more productive
land could be managed to make it safer

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